`1` They didn't use to go to the cinema every Sunday last year

`-` S + didn't + V-inf + O

`-` S + didn't + use to + V-inf + O 

`2` How long is it since you last wrote to him ?

`-` When + did + S + last + V-inf + O ? 

`-` How long + is it + since + S + last + Ved/V2 + O ? 

`3` This is the best film I have ever seen 

`-` This is + the + short-adj(+er) + S + has/have + ever + Vpp 

`4` Did you have a good time at the festival ? 

`-` enjoy yourself = have a good tim

`5` You aren't allowed to drive a car in this area

`-` be allow to do sth : cho phép làm gì 

1 They didn't use to go to the cinema every Sunday last year

S + didn't use to + Vo : chưa từng

2 How long have you written to him ?

How long + Have/has+S + V3/ed ?

3 This is the first time i have seen a better film than this one

Ct This is the first time + S + Have/has + V3/ed

4 Did you have a good time at the festival ? ( enjoy yourself = have a good time )

5 You aren't allowed to drive a car in this area ( allow + To Vo)